Question 995992
2^2x-3(2^x)+2=0
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Sub u for 2^x
{{{u^2 - 3u + 2 = 0}}}
(u - 2)*(u - 1) = 0
u = 1,2
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2^x = 1 --> x = 0
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2^x = 2 --> x = 1